L31 with mechanical clutch
 

Do the new L31 crate engines come drilled and tapped for the clutch cross shaft ball stud?
Thanks!
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Re: L31 with mechanical clutch
 

Mine was not, had to drill & tap.

Excellent, I can handle that. Thanks.
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Re: L31 with mechanical clutch
 

Had to drill and tap mine to, use a sharp bit. also had to do two for the timing cover. got it running last weekend sweet engine, love it.

Re: L31 with mechanical clutch
 

my 4 bolt main l31 has a hole drilled / tapped just above the oil pressure port above the filter boss area .

the hole goes in to the bell housing cavity .

i think its the right one for mech clutch ? ?

Yes, I put the bracket on and marked the forward hole, don’t go too deep use the bottom end tab and a real short bolt.
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Re: L31 with mechanical clutch
 

It depends on what year truck you are installing the engine in. The '63-'66 trucks require the forward boss for the ball stud for the bellcrank.

Re: L31 with mechanical clutch
 

It depends exactly what year of a truck you are installing the engine into.

Re: L31 with mechanical clutch
 

My L31 was a take out from a 99 model and accepted a mechanical clutch in my 78 no problem. But I'm pretty sure it attached to the bellhousing not the engine. Been a while so I forget lol.

Re: L31 with mechanical clutch
 

Yes the square bodies have the clutch ballstud bolted to the side of the bellhousing.